Cumulative Update for Windows not showing as available

$tsp = Get-TroubleshootingPack C:\Windows\diagnostics\system\WindowsUpdate
Invoke-TroubleshootingPack -Pack $tsp -AnswerFile .\WUDAnswers.xml -Unattended -Result $env:HomeDrive\WUDResult

[xml]$xml = Get-Content $env:HomeDrive\WUDResult\ResultReport.xml
$xml.ResultReport.Package.Problem.DetectionInformation.DetailedInformation.Detail.Contents.Objects.Object | % { write-output $_.'#text';write-output ". " }

$today = Get-Date
$start = $today.AddDays(-33)
$events = Get-WinEvent -FilterHashtable @{
   LogName='Setup'
   StartTime=$start
   EndTime=$today
}
$events | % {
    Write-Output "$($_.TimeCreated) | $($_.ID) | $($_.Message)"
}

### Dism OS
Write-Output "Running Dism.exe /Online /Cleanup-Image /CheckHealth"
start-process Dism.exe -ArgumentList '/online /Cleanup-Image /checkhealth' -Wait
Write-Output "Running Dism.exe /Online /Cleanup-Image /ScanHealth"
start-process Dism.exe -ArgumentList '/online /Cleanup-Image /scanhealth' -Wait
Write-Output "Running Dism.exe /Online /Cleanup-Image /RestoreHealth"
start-process Dism.exe -ArgumentList '/online /Cleanup-Image /Restorehealth /NoRestart' -Wait

### SFC
start-process sfc -ArgumentList '/scannow' -Wait
$events = Select-String -path C:\Windows\Logs\CBS\CBS.log -Pattern '\[SR\] Repairing','\[SR\] Verify and Repair'
foreach ($event in $events){
    Write-Output $event
}

### Dism Components
start-process Dism.exe -ArgumentList '/Online /Cleanup-Image /AnalyzeComponentStore' -Wait
start-process Dism.exe -ArgumentList '/Online /Cleanup-Image /StartComponentCleanup /NoRestart' -Wait

$events = Get-WinEvent -FilterHashtable @{
   LogName='Setup'
   ID=1013,1014
} | Select Message
foreach ($event in $events){
    Write-Output $event
}

$arch = Get-WMIObject -Class Win32_Processor -ComputerName LocalHost | Select-Object AddressWidth

#1. Stopping Windows Update Services...
Stop-Service -Name BITS
Stop-Service -Name wuauserv
Stop-Service -Name appidsvc
Stop-Service -Name cryptsvc

#2. Remove QMGR Data file...
Remove-Item "$env:allusersprofile\Microsoft\Network\Downloader\qmgr*.dat" -ErrorAction SilentlyContinue

#3. Renaming the Software Distribution and CatRoot Folder...
Remove-Item $env:systemroot\SoftwareDistribution -recurse -force -ErrorAction SilentlyContinue
Remove-Item $env:systemroot\SoftwareDistribution.bak -recurse -force -ErrorAction SilentlyContinue
#Rename-Item $env:systemroot\SoftwareDistribution SoftwareDistribution.bak -ErrorAction SilentlyContinue
# This may not work if the folder is locked by having a contained file being accessed
Remove-Item $env:systemroot\System32\Catroot2.bak -recurse -force -ErrorAction SilentlyContinue
Rename-Item $env:systemroot\System32\Catroot2 catroot2.bak -ErrorAction SilentlyContinue

#4. Removing old Windows Update log...
Remove-Item $env:systemroot\WindowsUpdate.log -ErrorAction SilentlyContinue

#5. Resetting the Windows Update Services to default settings...

[void]("sc.exe sdset bits D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)")
[void]("sc.exe sdset wuauserv D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)")

Set-Location $env:systemroot\system32

#6. Registering some DLLs...
regsvr32.exe /s atl.dll
regsvr32.exe /s urlmon.dll
regsvr32.exe /s mshtml.dll
regsvr32.exe /s shdocvw.dll
regsvr32.exe /s browseui.dll
regsvr32.exe /s jscript.dll
regsvr32.exe /s vbscript.dll
regsvr32.exe /s scrrun.dll
regsvr32.exe /s msxml.dll
regsvr32.exe /s msxml3.dll
regsvr32.exe /s msxml6.dll
regsvr32.exe /s actxprxy.dll
regsvr32.exe /s softpub.dll
regsvr32.exe /s wintrust.dll
regsvr32.exe /s dssenh.dll
regsvr32.exe /s rsaenh.dll
regsvr32.exe /s gpkcsp.dll
regsvr32.exe /s sccbase.dll
regsvr32.exe /s slbcsp.dll
regsvr32.exe /s cryptdlg.dll
regsvr32.exe /s oleaut32.dll
regsvr32.exe /s ole32.dll
regsvr32.exe /s shell32.dll
regsvr32.exe /s initpki.dll
regsvr32.exe /s wuapi.dll
regsvr32.exe /s wuaueng.dll
regsvr32.exe /s wuaueng1.dll
regsvr32.exe /s wucltui.dll
regsvr32.exe /s wups.dll
regsvr32.exe /s wups2.dll
regsvr32.exe /s wuweb.dll
regsvr32.exe /s qmgr.dll
regsvr32.exe /s qmgrprxy.dll
regsvr32.exe /s wucltux.dll
regsvr32.exe /s muweb.dll
regsvr32.exe /s wuwebv.dll

#7) Removing WSUS client settings...
REG DELETE "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate" /v AccountDomainSid /f
REG DELETE "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate" /v PingID /f
REG DELETE "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate" /v SusClientId /f

#8) Resetting the WinSock...
[void](netsh winsock reset)
[void](netsh winhttp reset proxy)

#9) Delete all BITS jobs...
Get-BitsTransfer | Remove-BitsTransfer

#10) Attempting to install the Windows Update Agent...
if($arch -eq 64){
    #wusa Windows8-RT-KB2937636-x64 /quiet
}
else{
    #wusa Windows8-RT-KB2937636-x86 /quiet
}

#11) Starting Windows Update Services...
Start-Service -Name BITS
Start-Service -Name wuauserv
Start-Service -Name appidsvc
Start-Service -Name cryptsvc

#12) Forcing discovery...
wuauclt /resetauthorization /detectnow

Write-Output "Windows Update settings restored to default."